Using fluidized bed and flume experiments to quantify cohesion development from aging and drainage

Auteur(s) et Affiliation(s)



Description :
The goal of this study was to quantify changes in soil cohesion due to aging and subsurface hydrologic condition using a fluidized bed method. A flume experiment was also used to verify that findings from the fluidized bed experiment translated into measurable changes in soil erodibility. Tests were performed on 3 different soils (a Miami soil, a Cecil soil and Crosby–Miami soil complex). Changes in soil cohesion due to aging and drainage state were successfully detected by the fluidized bed technique. For all soils tested, cohesion developed in a two-stage process where an increase in cohesion with aging duration immediately after the soil was rewetted, was followed by a decrease in cohesion which often started after 24 h of aging. Trends in soil rill erodibility Kr with aging duration measured in the flume experiment were consistent with the two-stage pattern observed in soil cohesion estimates but the legacy effect of suction applied at field capacity faded after 72 h of aging.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2014, vol. 39, n°. 6, p. 749-757, nombre de pages : 9, Références bibliographiques : 1 p.

Date :
2014

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley